1.	Simplify 1 Simplify the following expression: $$ 2\times2\times2\left({(-5)}^{2} - 5\times4\right) $$ Correct Answer $$ 40$$ or 40.0000

2.	Simplify 2 Simplify the following expression: $$ \left(-6 - 1\right)\left(-3 - -4\right) - {\left(\frac{-5}{-3}\right)}^{2} $$ Correct Answer $$ -7 - {\left(\frac{5}{3}\right)}^{2}$$ or -9.77778

3.	Fractions 1 Simplify the following expression: $$ \frac{-4}{2} - \frac{-4}{5} $$ Correct Answer $$ \frac{-6}{5}$$ or -1.2

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{2}{4}}{\frac{-6}{5}} $$ Correct Answer $$ \frac{-5}{12}$$ or -0.4166666666666667

5.	Significant figures 1. Write the following to 3 significant figures: 189.30895 Correct Answer 189 or $$1.89\times10^{2}$$ 2. Write the following to 3 significant figures: 27.465883 Correct Answer 27.5 or $$2.75\times10^{1}$$

6.	Standard Form 1. Write the following in standard form to 4 significant digits: 0.634974 Correct Answer $$6.350\times10^{-1}$$ 2. Write the following in standard form to 5 significant digits: 0.108609 Correct Answer $$1.0861\times10^{-1}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 0.00004058 Correct Answer $$41\times10^{-6}$$ 2. Write the following in preferred standard form to 2 significant digits: 3.018 Correct Answer $$3.0\times10^{0}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{{\left(\frac{-1}{-1}\right)}^{2}}{{\left(-1 - 6\right)}^{\frac{-1}{4}}} $$ Correct Answer $$ \frac{1}{{(-7)}^{\frac{-1}{4}}}$$ or NaN

9.	Simplify 1 Simplify the following expression: $$ \left(-6 + -3\right)\left(6 - 6\right) - {\left(-2 - 5\right)}^{2} $$ Correct Answer $$ -49$$ or -49.0000

10.	Simplify 2 Simplify the following expression: $$ \frac{2(-6)(-1)}{\left(-3 - -5\right)\frac{-6}{-3}} $$ Correct Answer $$ 3$$ or 3.00000